Proactive PDU Monitoring

Q: Can PRTG monitor PDUs in remote data centers or branch offices?

Yes, and this is where the probe architecture earns its place. On Windows systems, classic remote probes handle local SNMP polling. On Linux (Debian, Ubuntu, RHEL) you deploy the multi-platform probe instead. Either way, processed data goes back to your central PRTG server rather than raw polling traffic across the WAN. If the connection drops the probe keeps running and syncs when it reconnects. No complex firewall rules, no VPN tunnel to every individual PDU.

Monitor power usage, load distribution, and environmental conditions across your data center before a PDU issue becomes a downtime event

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What Metrics Should You Monitor on a PDU to Prevent Data Center Downtime?

PDU problems rarely announce themselves clearly. Load creeps up gradually, a branch circuit approaches its limit across days or weeks, and the first obvious signal is often a tripped breaker or a hardware shutdown. Metered PDUs give you aggregate rack-level data. Monitored PDUs expose outlet-level metrics, environmental sensors, and status information. The difference matters when you're trying to pinpoint where a problem started.

Paessler PRTG connects to your power distribution units via SNMP and pulls near real-time data on voltage, current, power usage, and temperature across both PDU types. Configure thresholds per sensor, define your notification rules, and polling runs on your set interval from there. For distributed sites, remote probes cover rack power across locations through the same web interface, with no separate on-site tools needed. Supported manufacturers include APC, Raritan, ServerTech, Vertiv, Eaton, Tripp Lite, CyberPower, and any SNMP-enabled PDU.

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PRTG is compatible with all major vendors, products, and systems

Complete Power Visibility Across Your Data Center

Prevent Power Overloads Before They Cause Downtime

When you're managing dozens or hundreds of racks, a single overloaded branch circuit can take down critical IT equipment. Without continuous visibility into power distribution, you're troubleshooting in the dark, often after the damage is done.

PRTG monitors power consumption across your PDUs and alerts you when loads approach capacity. Set thresholds for amperage, voltage, and power usage at the rack level, and receive notifications via email, SMS, or push alerts before overloads occur. Historical data shows usage trends over time, helping you spot gradual increases before they become emergencies.

Key benefits:

Continuous monitoring of power metrics across all rack PDUs
Threshold-based alerts prevent circuit overloads and equipment shutdowns
Remote monitoring eliminates the need for on-site checks
Historical tracking identifies trends and supports capacity planning
Centralized view across single-phase and three-phase installations

Monitor Energy Consumption to Improve Efficiency and Reduce Costs

Most data center energy conversations start and end with the utility bill. That number tells you what you spent, not where it went. And without rack-level data, cost reduction stays a goal rather than a project.

PRTG pulls power draw data from metered and monitored PDUs continuously. Slice it by rack, by location, by time period. Inefficiencies that were invisible in aggregate become obvious when you can compare two racks side by side and one is pulling significantly more for the same workload. For PUE reporting, the inputs are already there, you're not estimating anymore.

Track energy consumption and power usage across all PDUs
Feed accurate data into PUE calculations rather than working from estimates
Compare power draw across racks, which sometimes surfaces imbalances nobody knew were there
Pull reports for energy audits, budgeting, or sustainability documentation
Single view of power systems across distributed data centers without jumping between tools

Gain Visibility Into Rack-Level Power for Better Capacity Planning

Capacity planning without accurate power data is guesswork. You assume a rack has headroom, you deploy new hardware, and then you find out mid-project that the branch circuit is already at 80%. At that point the options are expensive.

PRTG monitors rack power continuously. Current draw, available capacity, utilization percentages per PDU are all visible without sending someone on-site. For monitored PDUs that expose outlet-level metrics via SNMP you can go further and track individual outlets to see exactly where power is allocated across a rack. That level of detail changes how you approach hardware refreshes and consolidation planning.

Near real-time visibility into rack-level power capacity and utilization
Outlet-level monitoring for PDUs that expose these metrics via SNMP
Identify underutilized racks and adjust equipment placement accordingly
Back deployment decisions with actual power availability data, not estimates
Remote monitoring reduces the need for on-site assessments

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Keep Your Data Center Environment Within Safe Operating Conditions

Full infrastructure coverage means tracking the physical conditions your hardware runs in, not just the network traffic it generates. PRTG pulls data from environmental sensors integrated with your PDUs, tracking temperature, humidity, and other conditions alongside your power metrics. Set thresholds that reflect your facility's actual operating requirements and get notified when conditions drift. Because power and environmental data sit in the same platform, you have full context when something needs attention, not two separate tools telling half the story each.

Environmental monitoring alongside power metrics in one web interface
Track temperature, humidity, and other sensor data from PDU-integrated sensors
Threshold-based alerts for out-of-range conditions
Correlate environmental data with power usage patterns to cut troubleshooting time
Coverage across distributed sites from a single dashboard

Simplify PDU Management Across Distributed Locations

When your infrastructure spans multiple sites (branch offices, remote cabinets, or geographically distributed data centers), keeping tabs on power distribution becomes a logistical nightmare. You shouldn't need separate tools or on-site staff to monitor rack power.

PRTG uses remote probes to monitor PDUs across distributed locations, consolidating all power monitoring data into a single web interface. Each PDU communicates via SNMP over your existing Ethernet infrastructure. No proprietary software or additional hardware required. Check metrics and adjust thresholds from anywhere, with role-based access control for your team.

Remote monitoring of PDUs across unlimited sites via PRTG remote probes
Centralized interface eliminates the need for multiple vendor web UIs
Monitor all PDUs via SNMP over standard Ethernet connections
No additional licensing fees per device. Transparent pricing based on sensors
Manage monitoring configurations, thresholds, and notifications in one software

How PRTG Monitors Power Distribution Units

PDU monitoring only works if the data is actually there when you need it. That means correct SNMP configuration, consistent polling, and outlet-level metrics actually being collected, not assumed. Here's how PRTG collects, surfaces, and keeps that data current across your infrastructure.

SNMP-Based Monitoring

SNMP v1, v2c, and v3 are all supported. In practice that means if the PDU has a network port and SNMP enabled you point PRTG at its IP address, enter credentials, and polling starts. What comes back depends on the device's MIB. Voltage, current, load, frequency are common. Outlet-level data only shows up if the PDU firmware exposes it, which metered PDUs typically don't. Those give you rack-level aggregates instead. No agents to install on the PDU side, no proprietary protocol to negotiate. It either speaks SNMP or it doesn't and most rack PDUs do.

Auto-Discovery

Run auto-discovery and PRTG scans the network, finds SNMP-enabled devices including PDUs, and surfaces them for configuration. For common brands like APC, Raritan, and ServerTech there are pre-built sensor templates. In most cases that gets you to a working monitoring setup without touching individual OIDs. Where it gets more involved is custom or less common hardware. PRTG's custom SNMP sensors cover that but it does require knowing which OIDs you want to poll. Worth being honest about: template coverage varies by model, not just manufacturer.

Alerts and Notifications

Set a warning threshold at 70% load and an error at 85%. When the PDU crosses it PRTG fires a notification. Which kind depends on what you've configured, email, SMS, push, syslog, HTTP actions are all options. The alert includes a historical graph so whoever receives it has context immediately rather than having to log in and pull it manually. Also the thresholds are per-sensor not global, so you can set different limits for a high-density compute rack versus storage.

Trends and Reporting

Every metric PRTG collects goes into a time-series database. Retention is configurable. A gradual load increase that looks fine today shows clearly in a 90-day trend graph, which is usually where capacity planning conversations actually start. Scheduled reports can go out automatically for audits or management reviews. Export formats cover PDF, HTML, CSV, and XML if the data needs to go into a DCIM platform or a spreadsheet someone's maintaining separately. Not glamorous but it's what finance and facilities teams actually ask for.

Remote Probes

Central PRTG server, remote probes at each site. The probe handles local SNMP polling and sends processed data back rather than raw traffic across the WAN, which matters when you're polling dozens of PDUs across a slow link. If the connection to the central server drops the probe keeps running locally and syncs when it reconnects. No full monitoring stack needed at each location, just the probe. For colocation facilities or branch offices where you don't have dedicated IT staff on-site that setup is usually the only realistic option.

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PDU Monitoring: Manual monitoring approach vs. PRTG

Task	Without PRTG Without PRTG	With PRTG With PRTG
Check power load on 50 rack PDUs	Without PRTG Log into each PDU's web interface individually. Takes 1-2 hours and only shows current values at that moment.	With PRTG PRTG polls all PDUs via SNMP at configurable intervals (commonly every 60 seconds) and displays live metrics in one interface. Check everything in under 2 minutes.
Detect approaching capacity limits	Without PRTG Manual checks only show snapshots, so you miss gradual load increases and only discover problems after circuits trip or equipment shuts down.	With PRTG PRTG's threshold alerts notify you when power consumption reaches 80% or 90% of capacity, giving you time to rebalance loads or upgrade infrastructure before downtime occurs.
Monitor PDUs at 10 remote sites	Without PRTG No visibility unless you're on-site or VPN into each location. Remote troubleshooting is nearly impossible without truck rolls.	With PRTG PRTG's remote probes monitor PDUs at every site and send data to your central server, giving you instant visibility across all locations from one interface.
Track historical power trends	Without PRTG Export CSV logs manually from each PDU, then build spreadsheets to analyze trends. Time-consuming and error-prone.	With PRTG PRTG automatically stores all power metrics and generates historical graphs with a few clicks. Export reports in seconds for capacity planning or audits.
Get alerted when power issues occur	Without PRTG No automated alerts. You discover problems when users report outages or during your next manual check.	With PRTG PRTG sends email, SMS, or push notifications the moment thresholds are breached, so you can respond before downtime impacts users.

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“From a server perspective, we're monitoring all of the key components of our service such as CPU usage, RAM disk space, the Windows services that it's running, and network connectivity of that server. In terms of networks, we’re monitoring all of our switches, firewalls, and access points. It’s really useful to be able to easily pull performance metrics from the PRTG dashboard.”

Ollie Kerslake, Infrastructure Lead

Riverford Organic Farmers

“The tool has given us greater control over all types of devices connected to the network (switches, IP telephony, security cameras, IoT, WiFi) that previously remained opaque when dealing with service incidents. This has improved our ability to diagnose and resolve problems, which has translated into greater efficiency and a better user experience in both internal and public services.”

Jordi Tolosà Bel, New Technologies Technician

Vinaroz City Council

“Our objective was to be able to monitor the health of our most critical servers containing data and applications, but also the flows and bandwidth between headquarters, our 50 servers in the cloud and the 15 servers at our production sites. For us, it is essential to have a proactive approach to understand where the weaknesses of the IT system are to be able to improve them.”

Marc Boullier, CIO

Carambar & Co

Paessler PRTG Network Monitor licenses & pricing

Choose the PRTG Network Monitor subscription that's best for you.

License Name	Price	License Details	Get started	Pricing Details
PRTG 500	^$200	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 50 devices
PRTG 1000	^$358	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 100 devices
PRTG 2500	^$742	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 250 devices
PRTG 5000	^$1,300	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 500 devices
PRTG 10000	^$1,642	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 1000 devices

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PDU Monitoring: Frequently Asked Questions

What types of PDUs can PRTG monitor?

Anything with an IP address and SNMP enabled. That covers metered PDUs, which give you aggregate rack-level data, and monitored PDUs, which expose per-outlet metrics, environmental sensors, and status information. Rack PDUs, cabinet PDUs, single-phase and three-phase installations all work. Vendor support includes APC, Raritan, ServerTech, Vertiv, Eaton, and others. If it responds to SNMP queries, PRTG can monitor it.

Does PRTG control PDU outlets or just monitor them?

Monitoring only. PRTG collects power metrics, environmental data, and status information, and alerts when thresholds are exceeded. Outlet switching is not something PRTG does. For remote power control you'd use the PDU's native web interface or a dedicated power management system. PRTG sits at the visibility and alerting layer, not the control layer. Worth being clear about that before deployment.

Can PRTG monitor outlet-level power consumption on my PDUs?

Depends on the PDU. For monitored PDUs that expose per-outlet data via SNMP, yes. PRTG queries the OIDs in the device's MIB and if current, voltage, or power per outlet is available it will display it. Metered PDUs typically don't expose that granularity. They report aggregate figures for the whole rack. Check your PDU's documentation or run an SNMP walk against the device before assuming outlet-level data is available. That step saves a lot of confusion later.

How does PRTG integrate with DCIM or other data center management tools?

PRTG exports scheduled reports in PDF, HTML, CSV, and XML. If you're pulling data programmatically into a DCIM or analytics platform, the API returns JSON. Most teams use PRTG as the monitoring and alerting foundation and feed power, environmental, and uptime data into their DCIM or capacity planning tools from there. It's not a DCIM replacement. The two serve different functions and they work well alongside each other.

Do I need separate sensors or licenses for each PDU?

PRTG licensing is sensor-based, not device-based. Each monitored metric counts as one sensor. A metered PDU typically runs 5-10 sensors. A monitored PDU with outlet-level data and environmental sensors can reach 20-50 depending on how granular you go. Pricing is based on total sensor count across your entire PRTG installation, so adding a PDU means adding however many sensors you configure for it, no separate per-device fee on top.

Can PRTG monitor PDUs in remote data centers or branch offices?

Yes, and this is where the probe architecture actually earns its place. On Windows systems, classic remote probes handle local SNMP polling. On Linux (Debian, Ubuntu, RHEL) you deploy the multi-platform probe instead. Either way, processed data goes back to your central PRTG server rather than raw polling traffic across the WAN. If the connection drops the probe keeps running and syncs when it reconnects. No complex firewall rules, no VPN tunnel to every individual PDU.

What happens when PRTG detects a power threshold violation?

A notification goes out through whatever channel you've configured: email, SMS, push via the PRTG mobile app, syslog, or a custom HTTP action. The alert includes the current value, your threshold settings, and a historical graph. You can also set escalation rules, warning email at 80% load, on-call page at 90% for example. The person receiving it has enough context to act without logging into anything else first.

How quickly does PRTG detect power issues?

Scan intervals are configurable per sensor. For most sensor types the minimum is 10 seconds, though some sensor types have a 60-second floor so it's worth checking for your specific setup. For critical metrics like amperage and voltage most teams set 30-60 second intervals. PRTG evaluates each result immediately after the scan completes and triggers the alert within seconds of a threshold breach. How fast you catch a problem depends on the interval you've set, so be deliberate about that configuration for your highest-risk PDUs.